At the end of the school year before last I asked my students to bring in stuff for the local soldiers (11) in Iraq and they brought all kinds of stuff that were on the lists of things wanted at that time like the towelettes, individual size cans of fruits, snacks, books, music Cds, etc., but after we sent them and all the guys came back, thankfully, they said the thing that meant the most to them were the little notes I asked the kids to write to them saying that we were thinking about them.
Maybe you could look up some of his friends and get them to write notes or letters letting him know that they're thinking about him to include in your package.